/*-
 * <<
 * UAVStack
 * ==
 * Copyright (C) 2016 - 2017 UAVStack
 * ==
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * >>
 */

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE
 * file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the
 * License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
 * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations under the License.
 */

package com.creditease.agent.feature.logagent.event;

import java.util.Map;

/**
 * Basic representation of a data object in Flume. Provides access to data as it flows through the system.
 */
public interface Event {

    /**
     * Returns a map of name-value pairs describing the data stored in the body.
     */
    public Map<String, String> getHeaders();

    /**
     * Set the event headers
     * 
     * @param headers
     *            Map of headers to replace the current headers.
     */
    public void setHeaders(Map<String, String> headers);

    /**
     * Returns the raw byte array of the data contained in this event.
     */
    public byte[] getBody();

    /**
     * Sets the raw byte array of the data contained in this event.
     * 
     * @param body
     *            The data.
     */
    public void setBody(byte[] body);

    /**
     * record the event Length
     */
    public void setBodyLength(int length);

    public int getBodyLength();
}
